.nav {
    overflow: hidden;
}
.sk {
    position: absolute;
    left: 190px;
    top: 40px;
    border-left: 1px solid #c81523;
    padding: 3px 0 0  14px;
}
.sk_list {
    float: left;
}
.sk_list  ul li {
    float: left;
}
.sk_list  ul li a {
    display: block;
    line-height: 47px;
    padding: 0 30px;
    font-size: 16px;
    font-weight: 700;
    color: #000;
}
.sk_con {
    float: left;
}
.sk_con ul li {
    float: left;
}
.sk_con  ul li a {
    display: block;
    line-height: 49px;
    padding: 0 20px;
    font-size: 14px;
   
}
.sk_con  ul li:last-child a::after {
    content: '\e91e';
    font-family: 'icomoon';
}
.sk_bd ul li {
    overflow: hidden;
    float: left;
    margin-right: 13px;
    margin-bottom: 3px;
    width: 290px;
    height: 470px;
    background-color: #fff;
    /* border: 1px solid transparent; */
}
.sk_bd ul li:nth-child(4n) {
    margin-right: 0;
}
.sk_bd ul li:hover {
    /* border: 1px solid #c81523; */
    box-shadow: 1px 0px 3px 1px #afafaf;
}

.tu {
    display: block;
    margin: 0 auto;
}

h4 {
    font-size: 14px;
    font-weight: normal;
    color: #666;
    padding: 12px;
}

p em {
    font-size: 20px;
    color: red;
    padding: 8px;
}

p del {
    font-size: 12px;
    color: #a4a4a4;
    font-weight: bold;
}

.yu {
    padding: 10px;
    padding-bottom: 0px;
}

.yu,
.tiao {
    display: inline-block;
}

.tiao {
    width: 130px;
    height: 10px;
    /* background-color: green; */
    border: 1px solid red;
    border-radius: 5px;
}

.tiao .t {
    width: 80%;
    height: 100%;
    background-color: red;
}

.but a {
    text-decoration: none;
    color: honeydew;
    font-size: 25px;
    line-height: 50px;
}

.but {
    width: 290px;
    height: 50px;
    background-color: #b1191a;
    text-align: center;
    margin-top: 5px;
}
.but:hover{
    box-shadow: 1px 1px 3px 1px rgb(107, 3, 3);
}